Rib setting and trimming machine



Jan, 11, 1938.

P. w. VALENTINE v RIB SETTING AND TRIMMING MACHINE Filed Nov. 25, 1935Patented Jan. 11,1938

' UNITED STATES mac 2,105,063 RIB SETTING AND TRG MACHINE Percy W.Valentine, Brooklyn,

Puritan Manufacturing Company,

N. Y; assignor to Boston,

Mass, a corporation of Massachusetts Application November 23, 1935,Serial No. 51,275

4 Claims.

The object of the present invention is to provide in one machinemeansfor trimming the rib reinforcement of an innersole and at the same timesetting or compacting the reinforced, rib so as particularly to make adistinct angle or groove at the inner junction of the rib with the bodyof the innersole. sharp or distinct angle is to facilitate passage ofthe stitch-forming instruments in sewing the inseam of a welt shoe, andlocation of the stitches of such scam in a definite line close to theouter surface of the innersole and close against the inner side of therib.

The reinforcement of the type referred to .is

" commonly a sheet of woven fabric, such as cotton duck, laid upon andcementedto the surface area of thevinnersole bounded by the stitchreceiving rib, and turned up and cemented to the inner surface ofthe'rib. Such reinforcing material, when applied to the innersoleprotrudes at its margins more or less beyond and over the edge of therib, and requires to be trimmed at or parallel to such edge (in caseswhereit is not folded around the rib and pressed closely against theouter side thereof and into the outer rib angle). Such reinforcementalso, although tucked somewhat into the inner angle of the rib whenbeing applied, usually does not lie closely enough against the innersurface of the rib and deeply enough in the inner rib angle, atleastafter its. excess margin has been cut off in a trimming machine, 'forproper formation and location of the inseam stitches by which the upperand welt are secured to the innersole rib in making shoes. Hence theusual practice followed heretofore has been to pass the reinforcedinnersole, after trimming, between the pressing instruments of a ribsetting machineto bring it into the condition requisite for best workin'inseaming.

It is the purpose of the present invention to combine in one machinemeans for both cutting off the' excess of reinforcing fabric extendingbeyond the innersole rib, and at the same time setting the reinforcingmaterial deeply and fully into the vertex of the inner angle between therib andthe innersole body, in the course of one and the same operationin a single machine. The following specification and accompanyingdrawing disclose means which I have devised for effecting this object,and illustrate the principles of the invention for which I claimprotection herein.

In the drawing,- J

The purpose of such a tegral with the'body or ing the invention;

Fig. 2 is a front elevation of the machine;

Fig. 3 is a fragmentary perspective View of one part of the settingmeans and the cooperating trimming knife;

. Fig. 4 is a perspective view of the cooperating member of rib settingmeans, being the member which particularly crowds the reinforcingmaterial into the rib angle;

Figs. 5 and 6 are fragmentary sectional views showing the instruments ofFigs. 3 and 4 in two different positions;

Figs. '7 and 8 are fragmentary perspective views of a work piece showingit respectively before and after being operated on by the machine.

Like reference characters designate the same parts wherever they occurin all the figures.

Referring first to Figs. 7 and 8, the type of innersole there shown in afragmentary way comprises a body 11' having an upstanding rib b forreception of the stitches by which the upper and welt of a shoe areunited to the innersole, and having a sheet 0 of reinforcing fabric. The

, rib here shown is of composite character made of a core and anenveloping strip of fabric attached to the body a. But this showing isillustrative and typifies any form. of rib whether inoriginally separateand attached by any suitable means. The reinforcing material 0 isusually a sheet of cotton duck, but may be of other suitable material,and is adhesively united to the area of the innersole "within the riband to the inner Its marginal part c, which projects to a greater sideof the rib.

or less extent overor beyond the rib, as indicated in Fig. 7, needs tobe cut off, and the bend c which enters to some extent angle of' therib, needs to be tucked and forced closely into that angle and againstthe base of.

within the inner the rib in order to prepare the innersole for mostefficient use in the subsequent inseaming step.

The means which I have devised for conjointly setting and trimming therib reinforcement comprise a pair of cooperating pressing members, one

of which is-provided with a lip adapted to indent the inner rib angle, aknife, and means for operat- 1 ing'these parts in proper timing withautomatic work feeding means. The pressing principles are embodiedinthis illustration in a stationary work support it? and a reciprocativepresser foot H. The stationary member is conveniently made as a narrowbar-like table which is secured rigidly to a bracket l 2 rising from thebase l3 of a machine frame which additionally supports other operatinginstruments and actuating means therefor. Said support l projectsforwardly from the bracket l2 into the clear and has a lip l4 on itsextremity, projecting slightly from the adjacent surface of the supportand having a narrow edge which, however, is not sharp enough to cut thereinforcing material when the latter is pressed against it. This thinedged lip is substantially straight in the direction of the feed of thework for a length substantially equal to, or preferably slightly greaterthan, the length of a single step of the work feed, and itseqgtremitiesin the feeding direction are curved or inclined downwardlyso as to permit free feeding of the work without obstruction.

The complemental presser II is adapted to reciprocate toward and awayfrom the work support or presser l0, (vertically intheillustratedembodiment), and is secured to a bar l5iwhich is fittedslidingly to guides in an overhanging arm N5 of the machine frame.Presser ll is suitably located and formed to bear against the outer sideof the innersole rib h when the latter is laid over the upper side ofthe support I0, substantially as shown in Figs. Sand 6.

The trimmer is a knife blade l1 having a cutting edge on its lower end,which is secured to a shank l8 mounted on a bar l9 which alsoreciprocates in the arm 16 beside the bar l5. The knife travels in apath close to the rear side of the presser foot H and is pressed againsta cutting plate. 20 set into the upper side of the work support in adepression adjacent to the lip l4.

A main shaft 2| mounted in the overhanging arm l6 and driven by a beltpulley 22, reciprocates the bar l9 by means of a crank 23,'connectingrod 24 and sleeve 25 adjustably secured to the bar and to which theconnecting rod is coupled by a wrist pin. The presser H is normallydepressed and forced against the work by aspring 26, suitably made fastto the machine frame and arranged to bear on the presser bar I5. Anabutment arm or finger 21 is secured to the presser bar and overliessleeve 25 in position to be engaged and lifted by the latter when' theknife is raised, at such times and for such duration as to permitfeeding of the work by the feed means presently described.

Themachine includes also a spring actuated work retainer 28 which inthis instance is a roll carried by the end of an arm 29 pivoted at 30 toa bracket 3| secured to the end of the arm I6. The Work retainer issuitably located to bear on the surface of an innersoleadjacent tothe'rib thereof when such" innersole is placed in the position shown bydotted lines in Fig. 1 (and by full lines in Figs. 5 and 6 also), withits rib between the pressers l0 and H. A spring 32 bears on the arm'29and reacts against an abutment 33 on the end of a rod which projectsfrom the lower end of bracket 3! through an opening in the arm 29.

Periodic feeding of the work is effected by a pointed feed pin 34carried by a reciprocating bar 35 and adapted to be advanced through aslot 35! in the work support ID, and withdrawn. Bar 35 is movableendwise in guideways in an arm. 36 secured to the outer end of anoscillative shaft 31 in the base, and adapted to be moved from side toside by oscillative movement of said shaft. The latter is thus moved byan eccentric 38 on the main shaft 2 I acting through intermediatemechanism 39 to give shaft 31 aback and forth movement through apredetermined angle with each complete rotation of the main shaft. Thebar 35,

which carries the feed finger or pin 34, is reciprocated by anoscillative shaft 40 in the base, which is connected to the bar 35 by acrank 4| and connecting rod 42, and driven from shaft 2| by an eccentric44 thereon and a connecting rod 45 engaging the eccentric and pivoted toa crank arm 46 on shaft 40. These shafts (31 and 40) are timed suitablyto cause advance or rise of the feed pin during the swing of the feedarm in one direction and to withdraw from the work before the end ofthis swing, remaining withdrawn clear of the work throughout the swingof the feed arm in the opposite direction. The knife advances to cut,and withdraws when the work is held stationary between feeding steps;and the lifting means for thepresser H are so arranged and adjusted thatthe latter does not rise and release the rib until the feed pin hassomewhat entered the under side of the rib, at least sufficiently toimpart a positive feeding motion to it. The retainer 29 assures that thework will not be displaced otherwise than in the'line of feed afterhaving been released by rise of the presser ll. These devices andinstruments are organized to impart feeding steps to the work slightlyshorter than the width of the cutting knife, to assure a sufficientoverlap of successive cuts. Provided these conditions are met, theabsolute values of knife width, rise and descent of the feed pin, andlength of swing of the feed arm may be anything desired.

When a work piece is to be placed in the machine and removed, thepresser H is lifted further than it rises in normal automatic operation,

and in being so lifted, a roll 46I which it carries protruding from itsforward side comes to bear ona cam surface 41 of the retainer arm 29 anddisplaces the retainer 28 far enough from the work support to leave freeroom for placement and removal of work pieces. In the normal automaticoperation, roll 46l never reaches the cam surface. The presser may bethus raised by the operator at will, through the medium of a lever orthe like, (not shown), which is coupled by a connecting rod 48 with alever 49 pivoted at 50.

andhaving an offset armor finger 5| underlying a finger 52 protrudingfrom the presser bar .l5 and which may be a part of. the abutment 21previously described.

The cutting plate 20 against which the edge of the knife is forced intrimming off the reinforcing fabric is preferably a piece of metalenough softer than the tool steel of which the knife is made to avoidinjury to the latter, while sufficiently hard and tough to support thefabric against the thrust of the knife and endure a multitude ofrepeated knife impacts without being destroyed.

In theaction of the operating tools, the movable presser H is'forced bythe spring firmly, and with a sudden action somewhat like a hammer blow,against the innersole rib in each position of rest assumed by the latterafter a feeding step; and in so pressing the work, it causes the lip Hof the work support or stationary presser to be deeply crowded into theinner angle between the innersole body and rib. The principles of thisaction are shown by Fig. 6, although with some departures from exactdetail necessitated by the exaggerated thickness with which the layersof fabric are shown for clarity. The lip presses with such intensity ofunit pressure on the reentrant bend of the reinforcing fabric as to setthis bend deeply into the inner rib angle and bring it closely againstmovable beside said presser the side of the rib. Immediately after eachpressing step, the knife comes down and makes a further extension of thecut in the protruding margin of the reinforcement. The result issubstantially that shown in Fig. 8, in which the flap c of thereinforcement lying against the rib is trimmed ofi on a line parallel tothe edge of the rib, and bends up from the main body of thereinforcement from a distinct line 0 What I claim and desire to secureby Letters Patent is:

1. A machine of the type having a base, a bracket rising from the base,and an overhanging arm, means for operating upon reinforced ribbedinnersoles consisting of a narrow table projecting laterally from saidbracket adapted to support the rib of such an innersole on its upperside and abut at its end against the surface of the innersole adjacentto the rib, a presser movable in the overhanging arm toward and awayfrom the table to cooperate with the latter in gripping the innersolerib. and a knife similarly in position to sever reinforcing materialextending over the table, said table having a lip on its extremityprojecting toward the overhanging arm and arranged to indent theinnersole rib and reinforcing material in the angle between such rib andthe adjacent body of the innersole.

2. A machine of the type having a base, a bracket rising from the base,and an overhanging arm, means for operating upon reinforced ribbedinnersoles consisting of a narrow table projecting laterally from saidbracket adapted to support the rib of such an innersole on its upperside and abut at its end against the surface of the innersole adjacentto the rib, a presser movable in the overhanging arm toward and awayfrom the table to cooperate with the latter in gripping the innersolerib, a knife similarly movable beside said presser in position to severreinforcing material extending over the table and. being formed with asubstantially straight edge transverse to the Width of the table, and awork feeder having a work engaging portion movable in the direction ofsaid knife edge to feed the innersole in the intervals between pressingand cutting operations of the said presser and knife, the table havingon its extremity a lip projecting toward the overhanging arm and formedwith a thin edge which is substantially straight in the direction offeed of said work feeding means.

3. An innersole rib finishing machine comprising a table formed tosupport the stitching rib of an innersole and to engage at its end thebody part of such a sole adjacent to the base of such rib, a presserarranged to cooperate with the table in gripping such a rib, a knifeguided to reciprocate beside said presser toward and away from the ribsupporting surface of the table and having a cutting edge on itsextremity nearest to the table, and means for reciprocating said knifeso as to cut off against the table so much of the rib as protrudes fromthe contiguous side of the presser, and for reciprocating thepresser toclamp and release the rib; the table having on its before mentioned enda narrow edged lip arranged to indent the rib of the innersole in theinner angle thereof under the pressure exerted on the outer side of therib by said presser.

4. A machine of the type having a base, a bracket rising from the base,and an overhanging arm, means for operating upon reinforced ribbedinnersoles consisting of a narrow table projecting laterally from saidbracket adapted to support the rib of such an innersole on its upperside and abut at its end against the surface of .the innersole adjacentto the rib, a presser movable in the overhanging arm toward and awayfrom the table to cooperate with the latter in gripping the innersolerib, and means for reeiprocating said presser to bear against andrelease alternately such a rib; the table having on its before mentionedend a lip formedwith a narrow edge projecting from said overhanging armand adapted to indent the innersole rib and the reinforcing materialapplied thereto, in the inner angle between the rib and body of the in-.nersole by virtue of the pressure exerted by the presser against theouter side of the rib.

PERCY W. VALENTINE.

